Mortuary, Bolas's Citadel, Bile Urchin, and Falkenrath Noble

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Bile Urchin on the battlefield
• Falkenrath Noble on the battlefield

Steps

1. Activate Bile Urchin by sacrificing it
2. When Bile Urchin dies, Mortuary and Falkenrath Noble trigger
3. Resolve the Mortuary trigger, putting Bile Urchin from your graveyard onto the top of your library
4. Resolve the Falkenrath Noble trigger, causing you to gain 1 life and target opponent to lose 1 life
5. Resolve the Bile Urchin ability
6. Cast Bile Urchin from the top of your library by paying 1 life
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite storm count
• Infinite lifeloss